When Did the Book of Daniel Happen?

As you read through the book of Daniel, it is sometimes difficult to know when each chapter is taking place. Here is a handy chart:

Babylonian

604–562 - Nebuchadnezzar - Daniel 1-4

561–560 - Amel-Marduk (Eⅵl-Merodach)

559–556 - Nergal-Shar-Usur

556 - Labashi-Marduk

555–539 - Nabonidus

550–539 - Belshazzar - Daniel 5, 7-8

Persian

539–530 - Cyrus I - Daniel 6, 9-12

530–522 - Cambyses

521–486 - Darius I, Hystaspes (Ahasuerus?)

486–465 - Xerxes (Ahasuerus?)